Great Feasts of the Orthodox Church
The feast of the Resurrection of Jesus, called Pascha (Easter), is the greatest of the feasts of the Eastern Orthodox Church (and of the Eastern Catholic Churches of the Byzantine Rite), and as such is called the "feast of feasts". In addition, there are other days of great importance in the life of the Church: the Twelve Great Feasts (Greek: Δωδεκάορτον).
Eight great feasts in honor of Jesus Christ, and four great feasts honoring the Virgin Mary — the Theotokos — comprise The Twelve Great Feasts.
21 September [O.S. 8 September], the Nativity of the Theotokos
27 September [O.S. 14 September], the Exaltation of the Cross
4 December [O.S. 21 November], the Presentation of the Theotokos
7 January [O.S. 25 December], the Nativity of Christ/Christmas
19 January [O.S. 6 January], the Baptism of Christ — Theophany, also called Epiphany
15 February [O.S. 2 February], the Presentation of Jesus at the Temple
7 April [O.S. 25 March], the Annunciation
The Sunday before Pascha (Easter) — the Entry into Jerusalem or Flowery/Willow/Palm Sunday